Powercom 800VA - Manual (Page 11)

6. Alarm
6.1 "BACK UP" (slow alarm)
When in BACK UP mode, the YELLOW LED illuminates and the UPS
sounds an audible alarm. The alarm stops when the UPS returns to LINE
NORMAL operation.
Press the ON/OFF/TEST/SILENCE button during on-battery alarms to stop
the beeping.
6.2 "LOW BATTERY" (rapid alarm)
In BACK UP mode, when the battery energy runs low, the UPS beeps rapidly
until the UPS shuts down from battery exhaustion or returns to LINE
NORMAL operation.
6.3 "OVERLOAD" (continuous alarm)
When the UPS is overloaded (the connected loads exceed the maximum
rated capacity) the UPS emits continuous alarm to warn a overload condition.
Disconnect nonessential load equipment from UPS to eliminate the overload.
6.4 "REPLACE BATTERY" (continuous alarm)
The UPS emits continuous beeps and the REPLACE BATTERY LED
illuminates if the battery fails the self-test. See section 9 to replace battery by
yourself or call your dealer for services.
9